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Realistic facial expression of virtual human based on color, sweat, and tears effects.

Alkawaz MH, Basori AH, Mohamad D, Mohamed F - ScientificWorldJournal (2014)

Bottom Line: The effects of sweat, tears, and colors are integrated into a single animation model to create realistic facial expressions of 3D avatar.The effects of oxygenation of the facial skin color appearance are measured using the pulse oximeter system and the 3D skin analyzer.The result shows that virtual human facial expression is enhanced by mimicking actual sweating and tears simulations for all extreme expressions.

View Article: PubMed Central - PubMed

Affiliation: Faculty of Computing, Universiti Teknologi Malaysia, 3rd Floor, N28A, 81310 Johor Bahru, Johor, Malaysia.

ABSTRACT
Generating extreme appearances such as scared awaiting sweating while happy fit for tears (cry) and blushing (anger and happiness) is the key issue in achieving the high quality facial animation. The effects of sweat, tears, and colors are integrated into a single animation model to create realistic facial expressions of 3D avatar. The physical properties of muscles, emotions, or the fluid properties with sweating and tears initiators are incorporated. The action units (AUs) of facial action coding system are merged with autonomous AUs to create expressions including sadness, anger with blushing, happiness with blushing, and fear. Fluid effects such as sweat and tears are simulated using the particle system and smoothed-particle hydrodynamics (SPH) methods which are combined with facial animation technique to produce complex facial expressions. The effects of oxygenation of the facial skin color appearance are measured using the pulse oximeter system and the 3D skin analyzer. The result shows that virtual human facial expression is enhanced by mimicking actual sweating and tears simulations for all extreme expressions. The proposed method has contribution towards the development of facial animation industry and game as well as computer graphics.

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Related in: MedlinePlus

Generation of sad expression using FACS.
© Copyright Policy - open-access
Related In: Results  -  Collection


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fig5: Generation of sad expression using FACS.

Mentions: The present work applies FACS to create basic expressions such as angry, happy, sad, and fear. Figures 2, 3, 4, 5, and 6 demonstrate the four facial expressions for virtual human including the blushing for anger and happy expressions (without sweating or tears) together. A comparison is further made with the natural one.


Realistic facial expression of virtual human based on color, sweat, and tears effects.

Alkawaz MH, Basori AH, Mohamad D, Mohamed F - ScientificWorldJournal (2014)

Generation of sad expression using FACS.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4127249&req=5

fig5: Generation of sad expression using FACS.
Mentions: The present work applies FACS to create basic expressions such as angry, happy, sad, and fear. Figures 2, 3, 4, 5, and 6 demonstrate the four facial expressions for virtual human including the blushing for anger and happy expressions (without sweating or tears) together. A comparison is further made with the natural one.

Bottom Line: The effects of sweat, tears, and colors are integrated into a single animation model to create realistic facial expressions of 3D avatar.The effects of oxygenation of the facial skin color appearance are measured using the pulse oximeter system and the 3D skin analyzer.The result shows that virtual human facial expression is enhanced by mimicking actual sweating and tears simulations for all extreme expressions.

View Article: PubMed Central - PubMed

Affiliation: Faculty of Computing, Universiti Teknologi Malaysia, 3rd Floor, N28A, 81310 Johor Bahru, Johor, Malaysia.

ABSTRACT
Generating extreme appearances such as scared awaiting sweating while happy fit for tears (cry) and blushing (anger and happiness) is the key issue in achieving the high quality facial animation. The effects of sweat, tears, and colors are integrated into a single animation model to create realistic facial expressions of 3D avatar. The physical properties of muscles, emotions, or the fluid properties with sweating and tears initiators are incorporated. The action units (AUs) of facial action coding system are merged with autonomous AUs to create expressions including sadness, anger with blushing, happiness with blushing, and fear. Fluid effects such as sweat and tears are simulated using the particle system and smoothed-particle hydrodynamics (SPH) methods which are combined with facial animation technique to produce complex facial expressions. The effects of oxygenation of the facial skin color appearance are measured using the pulse oximeter system and the 3D skin analyzer. The result shows that virtual human facial expression is enhanced by mimicking actual sweating and tears simulations for all extreme expressions. The proposed method has contribution towards the development of facial animation industry and game as well as computer graphics.

Show MeSH
Related in: MedlinePlus